Combined fuel blower and pulverizer



May 27, 1930. P. l.. cRowE COMBIN-ED FUEL BLOWER AND PULVERIZER sheetssheef,

Filed Aug, 24, 1927 INVENTOR.

May 27, 1930'. P. L. cRowE COMBINED FUEL BLOWER AND PULVERIZER l'Fliled Aug. 24,. l192'? 2 Sheets-Sheet 2 Patented May 27, 1930 UNH'a STAT PAUL L. GROWE, OF BALTIMORE, MARYLAND COMBINED FUEL BLOWER AND PULVERIZER Application filed August 24,1927. Serial No. 215,099.l

This invention relates to certain new and useful improvements in a combined fuel blower and pulverizer and has for its particular object the provision of a blower and pulverizer encased in a housing and its parts so assembled as to provide a unitary structure.

A further object of the invention-is the provision of a combined fuel blower and pull() verizer, including grinder wheels, a sleeve therefor, and motors for vthe sleeve, and means in said sleeve to constitute a fan when the device is in operation for discharging the pulverized material ground by the grinder wheels.

A further object of this invention is the provision of a combined fuel blower and pulverizer, `which will thoroughly and positively pulverize all materials therein into a finely divided state, and a means associated with the pulverizer whereby said materials may be conveyed from the machine.

A still further object of this invention is the provision of a combined blower and pulverizer, including a casing and' housing',

motors located in the casing, grinders located in the housing, and a blower fan carrying sleeve mounted in the housing and casing and Y associated with said motorsand grinders for the operating of the grinders by virtue of the motors. t

A still further object of this invention is the provision of a combined fuel blower and pulverizer having a casing, a sleeve rotatably mounted in the casing and equipped with a fan, a motor mounted in the casing and secured to said sleeve for rotating the latter, and pulverizers located in the casing and having communication with the interior of the sleeve and operated through said sleeve by virtue of said motor. l

A stilllfurther object of the invention is the provision of a combined blower and pulverizer, that can be easily and quickly assembled, and isvof such construction that whenassembled the cost of manufacturing and use of space is reduced to aminimum.

With these and other objects'in view, the invention consists incertain novel features, combination and arrangement of parts as will be hereinafter more fully described, pointed out in thev accompanying drawings, and claimed. In the drawings, c Figure l is a transverseysectional top plan view, illustrating the complete assemblyV Vof my improved combined fuel blower and pulverizer;

Figure 2 1s a side elevational view of my improved invention; f

Figure 3 is an enlarged detailed sectional view of the pulverizer and the carrying sleeve struction of a combined blower and fuel pul-` verizer, which includes a combined casing and housing enclosing motors and pulverizer wheels, and a fanvcarrying sleeve associated with *saidv pulverizer Ywheels and motors, so that when material isfed to the wheels it will be thoroughly .pulverized and forced into the sleeve where it is blown into a furnace by a fan carried thereby, the unitary constructionY of the assembly reducing the cost of manufacturing, as well as operating costs.

When constructing thedevice, there is'pro vided a casing 5 having securedto one side face. thereof a housing 6, which when assembled provides a complete unit, and located centrally of the housing and casing and journaled transversely therethrough, ,is a

rotatable shaft 7, rotatably mounted in suity able bearings 8, which are supported in anyV suit-able manner tothe casing and housing,

5 and 6 res ectivel Mounted on this shaft 7 and rotatable, therewith, 1s an annular sleeve 9, and the interior of said sleeve is pro- Y vided with a plurality of relativelyV spaced longitudinally extending` serpentineV blades 10, which blades extend'throughout the entire length of said sleeve and constitute a fan for the purpose of creating a draft for blowing material therefrom, when the sleeve is rotated.

Aperipheral motor 11 is located in said cas-` ing. and secured to said sleeve, to rotate the latter when said motor is energized, this motor providing the dual function of rotating the sleeveand causing a forced draft by virtue of the blades carried in the'sleeve to blow all materials in sleeve therefrom. To provide means for allowing material to enter said sleeve, there are formed therein, openings 12,

adjacent each end thereof, these openings being in an annular series throughout the entire circumference of said sleeve and are arranged ata relatively spaced dista-nce apart,

' at the other end thereof, is located adjacent the inner face of the peripheral motor 11, the purpose of which location will be hereinafter more fully described.

To provide an auxiliary means for the operating or the rotating of the sleeve, I place in said casing` and secure to said sleeve, a turbine motor 14e, and this motor is separated from the peripheral motor 11 by the openings 12, and it is yequipped at its outer terminals with the usual buckets 15, which contact with'the inner walls of the casing 5 and communicate with a dual iiuid passage 16,

which passage ext-ends out through the easing 5 to a feed connection 17, which is also provided with dual openings 17, as clearly illustrated in Figure 7 of the drawings.

vrihe connection 17 is secured to a. supply source and conveys fluid through one ofthe openings 17 to the buckets 15 for the purpose of rotating the sleeve 9, and excess liuid is permitted to escape from said buckets through the other opening 17 municatestlierewith.

Y To provide a means for allowing outside air to be drawn into the casing 5, I providethe when the samecomouter wall thereof, with openings 18, and the airV passing through said openings passes around the periphery of said peripheral motor-1 1, in and through the openings 12 in the sleeve 9, and this passage of airy will assist in creating additional draft inthe sleeve 9- and will also provide. a cooling means for the motor 11 during the rotation thereof. To provide suflicient air space for the passageof saidv air aboutfsaidmotor, l secureto the inner wall of the casingV 5, a plurality of bearnglugs 19, which are secured to the inner surface of said casing and radiate inwardly therefrom, and provide a sufficient air pocket to permit said motor to freely rotate and be cooled by the passage of air thereover.

Located in the housing 6 and secured to the sleeve 9, is the pulverizer, which consists in its preferred form of a pair of beveled grindingg wheels, 2() and 21, respectively, the beveled faces of said wheels being opposed to provide an inlet throat to receive materials fed into the housing by ahopper 22 carried thereon, thev hopper being so located that a constant iiow of material is assured between the opposing faces of the grinding Wheels. The wheel 2O is keyed to the sleeve 9 for rotation therewith, and secured to the inner Vside face of the outer wall ofthe housing, is the wheel 21, which is'relatively stationary, and that surface of the grinding wheels below the bevels, which constitutes the pulverizing surface,

is in close proximity to each other and provides a grinding surface to reduce all materials fed therein, to a linelypulverized state, and if it is desired to increase or decrease the size of the material pulverized, it isonly necessary to increase or decrease the widthY of the grindingwheels, as desired.

To assure a means, whereby the materialsY fed between the bevel faces of the wheels may be conveyed to the interior of 'the sleeve,l

locate the grinding surfaces of said wheelsV directly overthat set of openings 12, `which are located in the housing. Thus, itcan be readily seen that the materials forced in the throat of the grinding wheels, defined by the beveled surfaces thereof, will bey thoroughly pulverized between the grinding surfaces, conveyedinto said sleeve,frcm whence'it is conveyedby the created draft therein, to its destination. Y y

' t is to be understood that while there are shown two grinding wheels, which constitute the pulverizers, that a single wheel can be used, or the wheels can be in series of two,

three, or four, and no particular stress vis laid on the number of wheels used and their particular construction, as the result is the same, whether* it is one Wheel or a multiplicity of wheels used. Y Y g I A Secured to theA outer wall of they housing 6,

kcentrally/f thereof and concentrically with the sleeve 9, is outlet member 2l,whicli`h'as a flaring mouth 25, so that all materials in said sleeve may be readily blown therefrom, through said outlet member. y 1 l wWhen the device is assembled, as described, the hopper 22 is continuously packed 'with material, and yeither the peripheral motor 11 is energized, or flui d is forced to the turbine, Y

and whichever motor is usedwill cause a rotation of the sleeve 9, whiclirotation will e a di aft insaidsieeve, and as the niatei-ial'is forced through the grinding surfaces of the pulverizers it isfredueed to a finely pulverized state and will dropk through the fiso openings 12 into said sleeve and thence conveyed therefrom through the member 24 to its proper designation by virtue of the fan blades.

When the motor l1 is used, air will be drawn through the openings 18, around said motor, by virtue of the bearing lugs 19, and Y will pass through the openings 12 in the sleeve 9 and mix with the created air therein, to assist in forcing the material therefrom.

Figure 9 illustrates a slightly modified form of the invention, the construction in the main being identical with the exception of one of the grinding wheels, which is designated by the numeral 26, this wheel being annular in formation and is secured to the inner wall of the housing 6 by the usual fastening means 23, and is so associated with the bevel Wheel 2O as to provide a full grinding surface, as in the present invention, this illustration being made to convey that the details of construction of the grinding wheels are not limited to the form shown.

It is to be understood that certain minor features and changes may be resorted to wit-hout departing from the spirit and scope of the invention as claimed.

Having thus described my invention, what I claim as new is: Y

1. A combined blower and pulverizer, comprising a casing and a housing, a sleeve rotatably mounted transversely in said housing and casing, a motor located in said casing and secured to said sleeve for rotating the same, a fan located on the interior of said sleeve, grinding wheels located in said housing, one of said grinding wheels secured to and rotatable with said sleeve and communicating therewith, the other of said grinding wheels secured to the housing, and a fan blade carried by the sleeve to constitute a blower.

2. In an apparatus of the class described, a casing and housing, a sleeve transversely mounted for rotation in said housing and casing, fan blades on the interior ofv said sleeve constituting a blower, a grinding wheel secured-to and rotatable with said sleeve, a second grinding wheel secured within the housing yadjacent the said first named grinding wheel, said sleeve and its associated grinder having a communication therein, said communicating passage also providing an air passage for atmospheric air, and air openings formed in said casing to permit said air to travel into said sleeve.

3. A combined blower and pulverizer comprising a casing and housing in communication with each other, a hopper secured to said housing, a sleeve transversely `rotatable in said housing and casing, a motor located in the casing and secured to the sleeve for rotat-ing the same, grinder wheels located in the housing, said grinder wheels having beveled faces constituting a throat located directly beneath the hopper, said sleeve carrying one i In testimony whereof he hereunto aliixeshis signature.

PAUL L. CROWE. 

